1,1-Difluoroethylene (or vinylidene fluoride) is a achromatic gas which is combustible in the ranges of 5.5 to 21%. It is baneful by assimilation and contact. It is hardly acrid in baptize and acrid in booze and ether. Under abiding acknowledgment to blaze or acute calefaction the containers may breach berserk and rocket.
Black pepper as a traditional herbal medicine for the treatment of many diseases, is one of important medicinal materials. As early as the end of the 19th century, as the main ingredient of pepper, pepper alkali have been purified and synthesis, but less research on the pharmacological effects. With the development of the technology of modern pharmacology, pharmacology of piperine have further understanding, summarized as follows: 1, the influence of piperine on the central nervous system, the chemical structure of piperine belongs to cinnamon amides, Cui Guangzhi in China and other research prove that piperine has sedative and hypnotic, anticonvulsants, skeletal muscle relaxation and the pharmacological action of antidepressant, etc. By intraperitoneal injection of sedative hypnotic effects of the piperine: piperine 10, 20, 40 mg kg. Colorless monoclinic prismatic crystals.
Serotonin (also alleged 5-hydrotryptophan) is begin in the beef of the academician and civil and in the platelets of our blood. When the walls of claret argosy are damaged, serotonin is appear from the platelets to astringe the claret barge and anticipate hemorrhage. In the tissue of the intestine, it acts as a analeptic to accomplish the bland beef contract. A lot of humans are apparently a lot of accustomed with serotonin as it acts in the academician – as a neurotransmitter that aids in the manual of assumption impulses amid synapses. All of these functions accomplish serotonin actual important to all of the body’s systems. Serotonin absence has been active in affection disorders, appetence control, premenstrual syndrome, autism, bistro disorders, fibromyalgia, appetence control, the affliction appearance of migraine, and added altitude and disorders. Some serotonin is adapted by our pineal gland into melatonin, the hormone that controls our beddy-bye cycle. Thus, serotonin absence is aswell affiliated to indisposition and added beddy-bye disorders.